Jumaat, Mohd Zamin and Mahmud, Hilmi and Alengaram, Ubagaram Johnson (2009) Structural Behaviour Of Oil Palm Shell Concrete Beams. In: International Engineering Convention, 11-14 May 2009, Damascus, Syria. (Submitted)
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Abstract
In Malaysia the abundant availability of waste oil palm shell (OPS) had given rise to a number of researches on the use of OPS as lightweight aggregates (LWA) to produce lightweight concrete (LWC). This paper presents the experimental results on mechanical properties and structural behaviour of OPS concrete (OPSC). The behaviour of grade 30 OPSC was compared with that of similar grade normal weight concrete (NWC). Ten percent of silica fume and five percent of fly ash were added as mineral admixtures in the OPSC. An in-depth mix design programme was conducted to obtain the appropriate mix design for the OPSC. Mechanical properties investigated include compressive strength, modulus of rupture, splitting tensile strength and Young’s Modulus. To study the flexural behaviour of OPSC, four reinforced OPSC and NWC beams of size 150 mm x 250 mm x 2600 mm were prepared. Each beam was tested under four point loading until failure. The experimental results were also compared with theoretical values and numerical analysis. The results show that the OPSC produced a density reduction of about 22% compared to NWC. However, the modulus of elasticity of OPSC was found to be about 46% of NWC. Similarly, OPSC produced 15% lower modulus of rupture compared to NWC. The flexural behaviour of OPSC beams shows superior performance compared to that of NWC. The experimental moment capacities of OPSC beams were found higher than the theoretical ultimate moment capacities obtained from the theoretical values and numerical analysis. The experimental ultimate moment capacity of OPSC beam was also found close to that of NWC beams. Though the lower modulus of rupture of OPSC resulted in early cracks, the OPSC beams exhibited a lot of cracking that resulted in smaller crackspacing and crack widths compared to NWC beams. The crack widths of OPSC beams were also found within the serviceable limit state. The ductility ratio of OPSC beams was found to be twice that of the NWC beams.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Oil palm shell; Lightweight concrete; Mechanical properties; Flexural behaviour |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering > Department of Civil Engineering |
| Depositing User: | Mr. Mohd Samsul Ismail |
| Date Deposited: | 30 Oct 2014 03:19 |
| Last Modified: | 05 Feb 2020 04:18 |
| URI: | http://eprints.um.edu.my/id/eprint/10126 |
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